<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>生成器函数实例2</title>
</head>

<body>
  <script>
    /* 
      模拟获取  用户数据    订单数据    商品数据
    */

    function getUsers() {
      setTimeout(() => {
        let data = '用户数据';
        iterator.next(data);
      }, 1000)
    }

    function getOrders() {
      setTimeout(() => {
        let data = '订单数据';
        iterator.next(data);
      }, 1000)
    }

    function getGoods() {
      setTimeout(() => {
        let data = '商品数据';
        iterator.next(data);
      }, 1000)
    }


    function * gen(arg) {
      let users = yield getUsers();
      console.log(users);

      let orders = yield getOrders();
      console.log(orders);

      let goods = yield getGoods();
      console.log(goods);
    }

    // 执行获取迭代器对象
    let iterator = gen('AAA');

    iterator.next()

  </script>
</body>

</html>